Question

VALENDO 25 PONTOS AJUDA AI PFV...
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Answer 1

Resposta:

1) a) 12

b) 32

c) -8

d) 18

e) - 22

Explicação passo-a-passo:

a) 4x - 7y

  4*3 - 7*0

  12 - 0

     12

b) x² + 16

  4² + 16

  16 + 16

     32

c) m + n

  12 - 20

   - 8

d) 3x² + 15

   3*1² + 15

   3*1 + 15

    3 + 15

      18

e) 7a - 8b

   7*(-2) - 8*1

   - 14 - 8

      - 22

2) a) 6²:$2^{4}$ = $\frac{36}{16} = \frac{18}{8} = \frac{9}{4}$

   b) $\sqrt{\frac{9}{4} } + \frac{1}{2} = \frac{3}{2} + \frac{1}{2} = \frac{3 + 1}{2} = \frac{4}{2} = 2$

   c) $\sqrt{36} - \sqrt{100} + \sqrt[5]{1} = 6 - 10 + 1 = - 4 + 1 = - 3$

   d) $(\frac{1}{2} )^{2} : (\frac{5}{6} )^{1} = \frac{1}{4} : \frac{5}{6} = \frac{1}{4} * \frac{6}{5} = \frac{6}{20} = \frac{3}{10}$

   e) $3^{2} : 16^{0} = 9 : 1 = 9$

   f) $\sqrt[3]{64} * 5^{0} + \sqrt[3]{0} = 4*1 +0 = 4 + 0 = 4$

  g) 7² - $\sqrt{49}$ + 8¹ = 49 - 7 + 8 = 42 + 8 = 50

  h) $5^{1} *(\frac{7}{5}) ^{1} =$  $5*\frac{7}{5} = 7$

  i) $- 4^{2} *\sqrt{25} - \sqrt[3]{1000} = - 16*5 - 10 = - 80 - 10 = - 90$

  j) $0^{8} + 8^{0} - \sqrt{16} = 0 + 1 - 4 = 1 - 4 = - 3$